p.332: 16
Angelo runs 7 miles per week and increases his distance by 1 mile each week. Marc runs 4 miles per week and
increases his distance by 2 miles each week. In how many weeks will Angelo and Marc be running the same
distance? What will that distance be?
3 weeks; 10 mi
p.332: 17
The school band sells carnations on Valentine's Day for $2 each. They buy the carnations from a florist for $0.50
each, plus a $16 delivery charge.
a.
Write a system of equations to describe the situation.
b.
Graph the system. What does the solution represent?
c.
Explain whether the solution shown on the graph makes sense in this
reasonable solution.
y = 2x
y = 0.50x + 16
It represents how many
carnations need to be
sold to break even.
situation. If not, give a
No. because the
solution is not a
whole number of
carnations; 11
carnations.
p. 332: 23
23.
The gardeners at Middleton Place Gardens want to plant a total of 45 white and pink hydrangeas in one
flower bed, In another flower bed, they want to plant 120 hydrangeas. In this bed, they want 2 times the number of
white hydrangeas and 2 times the number of pink hydrangeas as in the first bed. Use a system of equations to find
how many white and how many pink hydrangeas the gardeners should buy altogether.
45 white; 120 pink
p.332:24
Rusty burns 5 calories per minute swimming and 11 calories per minute jogging. In the morning, Rusty burns
200 calories walking and swims for x minutes. In the afternoon, Rusty will jog for x minutes. How many
minutes must he jog to burn at least as many calories y in the afternoon as he did in the morning?
34 min.
p.332: 26
A tree that is 2 feet tall is growing at a rate of 1 foot per year. A 6-foot tall tree is growing at a rate of 0.5 foot per
year. In how many years will the trees be the same height?
8 yr